Startup Stash - A curated directory of 400 resources & tools for startups
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Startup Collections - Resources & tools for entrepreneurs, designers & developers
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
NoCode.tech - Free tools & resources for non-tech makers and entrepreneurs
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.